@angular/platform-browser/esm2020/src/dom/events/event_manager.mjs

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { ɵgetDOM as getDOM } from '@angular/common';
import { Inject, Injectable, InjectionToken, NgZone } from '@angular/core';
import * as i0 from "@angular/core";
/**
 * The injection token for the event-manager plug-in service.
 *
 * @publicApi
 */
export const EVENT_MANAGER_PLUGINS = new InjectionToken('EventManagerPlugins');
/**
 * An injectable service that provides event management for Angular
 * through a browser plug-in.
 *
 * @publicApi
 */
export class EventManager {
    /**
     * Initializes an instance of the event-manager service.
     */
    constructor(plugins, _zone) {
        this._zone = _zone;
        this._eventNameToPlugin = new Map();
        plugins.forEach(p => p.manager = this);
        this._plugins = plugins.slice().reverse();
    }
    /**
     * Registers a handler for a specific element and event.
     *
     * @param element The HTML element to receive event notifications.
     * @param eventName The name of the event to listen for.
     * @param handler A function to call when the notification occurs. Receives the
     * event object as an argument.
     * @returns  A callback function that can be used to remove the handler.
     */
    addEventListener(element, eventName, handler) {
        const plugin = this._findPluginFor(eventName);
        return plugin.addEventListener(element, eventName, handler);
    }
    /**
     * Registers a global handler for an event in a target view.
     *
     * @param target A target for global event notifications. One of "window", "document", or "body".
     * @param eventName The name of the event to listen for.
     * @param handler A function to call when the notification occurs. Receives the
     * event object as an argument.
     * @returns A callback function that can be used to remove the handler.
     * @deprecated No longer being used in Ivy code. To be removed in version 14.
     */
    addGlobalEventListener(target, eventName, handler) {
        const plugin = this._findPluginFor(eventName);
        return plugin.addGlobalEventListener(target, eventName, handler);
    }
    /**
     * Retrieves the compilation zone in which event listeners are registered.
     */
    getZone() {
        return this._zone;
    }
    /** @internal */
    _findPluginFor(eventName) {
        const plugin = this._eventNameToPlugin.get(eventName);
        if (plugin) {
            return plugin;
        }
        const plugins = this._plugins;
        for (let i = 0; i < plugins.length; i++) {
            const plugin = plugins[i];
            if (plugin.supports(eventName)) {
                this._eventNameToPlugin.set(eventName, plugin);
                return plugin;
            }
        }
        throw new Error(`No event manager plugin found for event ${eventName}`);
    }
}
EventManager.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.0.3", ngImport: i0, type: EventManager, deps: [{ token: EVENT_MANAGER_PLUGINS }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable });
EventManager.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "13.0.3", ngImport: i0, type: EventManager });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.0.3", ngImport: i0, type: EventManager, decorators: [{
            type: Injectable
        }], ctorParameters: function () { return [{ type: undefined, decorators: [{
                    type: Inject,
                    args: [EVENT_MANAGER_PLUGINS]
                }] }, { type: i0.NgZone }]; } });
export class EventManagerPlugin {
    constructor(_doc) {
        this._doc = _doc;
    }
    addGlobalEventListener(element, eventName, handler) {
        const target = getDOM().getGlobalEventTarget(this._doc, element);
        if (!target) {
            throw new Error(`Unsupported event target ${target} for event ${eventName}`);
        }
        return this.addEventListener(target, eventName, handler);
    }
}
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